Update Test Application diagram as well as Test Scenario and
Test Case naming conventions to make them more clear and aligned
to Ztest suite name included as a part of Test Case name.
Signed-off-by: Dmitrii Golovanov <dmitrii.golovanov@intel.com>
Add a diagram to illustrate a test application's project
components with relationships between Ztest and Twister
objects.
Signed-off-by: Dmitrii Golovanov <dmitrii.golovanov@intel.com>